Wayfair Data Scientist interview questions

I start the interview in Feb, 2019 . Firstly I had the first round video interview for introducting projects experience and data science cases. Then I passed to final onsite interview which included three rounds, two of them are technical and one is behavioral.

First the interviewer asked about one of the projects on my resume, and some question about website data analysis, question on how to evaluate the influence of sale tags on website.